allow auditory headsets to use different channels

[vampirate]

Currently headsets can be scredrived and wires cut. I suggest that similar to how health scanners can be moduled, allow channels to be module linked into chips inside the heads. You could then pick up chips for different channels, stored in their respective departments, screwdrive the headset, snip the wire, weld the place the chip, weld it in, mend the wire, screwdrive the headset. Add some interesting opportunities for listening in as well for nondeaf people.